187. Упростите выражение и подчеркните его коэффициент: 1) -3,26x; 2)-0,8y (-0,7); 3) 3,2(-6)-7,8: (8,8 - 10,1); 4) 5a (-1,46) 0,6c; 5) 5a (-1,46) 0,6c; 6)

1) -3,2 ⋅ 6x = -19,2x

Коэффициент: -19,2

2) -0,8y ⋅ (-0,7) = 0,56y

Коэффициент: 0,56

3) 3,2 ⋅ (-6) - 7,8 : (8,8 - 10,1) = -19,2 - 7,8 : (-1,3) = -19,2 + 6 = -13,2

Коэффициент: -13,2

4) 5a ⋅ (-1,4b) ⋅ 0,6c = -7ab ⋅ 0,6c = -4,2abc

Коэффициент: -4,2

5) \(\frac{15}{56}\) ⋅ (-x) ⋅ \(\frac{28}{30}\) ⋅ y = \(\frac{15}{56}\) ⋅ \(\frac{28}{30}\) ⋅ (-x) ⋅ y = \(\frac{1}{4}\) ⋅ (-x) ⋅ y = -\(\frac{1}{4}\)xy

Коэффициент: -\(\frac{1}{4}\)

6) (\(\frac{35}{-72}\) ⋅ c) : \(\frac{3}{7}\) ⋅ d = (-\(\frac{35}{72}\) ⋅ \(\frac{7}{3}\)) ⋅ cd = -\(\frac{245}{216}\) cd

Коэффициент: -\(\frac{245}{216}\)